What touched me most in "The Swordsman" was Linghu Chong's request for what he wanted, but he couldn't get it. He Chong Ling was really upset, so I wanted to write a fanfic to give them different endings.
The junior sister is a cute character, but I was worried that her ignorance and simplicity would prevent her from accompanying Linghu Chong for a long time, so I decided to set it as a time travel. The characters might not be likable, and the writing probably didn't have a martial arts flair. It was purely for entertainment.